作者:Alain Godard、Jean-Marie Jacquelin、Guy Quéguiner
DOI:10.1016/0022-328x(88)80652-1
日期:1988.10
The three isomeric 2-, 3- and 4-pivalamidoquinolines react with lithiating reagents to give their metalation or nucleophilic addition products. Metalation occurs best with the 2-substituted isomer. Suprisingly the 4-pivalamidoquinoline is lithiated at C(8). A new directing group derived from the amine, the ureido substituent, directs the lithiation at C(2) of the 3-aminoquinoline derivative.
三种异构的2-,3-和4-新戊酰胺基
喹啉与
锂化试剂反应生成其
金属化或亲核加成产物。用2-取代的异构体最好发生
金属化。令人惊讶的是4-新戊酰胺基
喹啉在C(8)处被
锂化。衍生自胺的新的直接基团,
脲基取代基,将
3-氨基喹啉衍
生物的C(2)上的
锂化反应导向。